I am considering purchasing the Arduino Micro in large part because I need a small footprint for my project. My application will need to make use of the SDA and SCL pins as well as external interupts and will have an XBee radio on board (using pins 0 and 1). Can the Micro handle all this? It appears that the SCL and SDA pins (2 and 3) are the same pins used for the external interrupt pins. Does the Micro have SCL and SDA capability on any of the analog pins?